For one thing, it pushes the bounds of credulity that species who in theory don't get along very well* are going to be able to adventure together without some PvP arising. Which is in fact fine with me, they can slaughter each other if that's what they want to do, but some here seem to frown on it.
What does the species matter in that regard? Regular humans are just as good at hating one another as dwarves and elves, or any other fantasy race.
For another, most cultures/realms in my setting are, though not completely mono-racial, heavily skewed toward one species. There's very few truly cosmopolitan centres - a few big cities, mainly, and that's it - meaning that in a party such as you propose at least some of the characters are going to be met with suspicion (if not outright hostility) pretty much wherever they go. If that's what the players want then fine, but my experience both as player and DM is that this can get tiresome pretty fast.
* - yes there's baked-in underlying distrust/dislike between certain species; sure your PC Dwarf might like Elves but taking an Elf into a Dwarven city is asking for trouble with a capital T.
But that’s your decision to make it so, no?
Let me reiterate before going on; if you and your players enjoy this and no one has any complaints, then that’s awesome and you should absolutely keep doing what you’re doing.
But let’s say someone had an issue with this. Let’s say the players wanted to play a variety of PC races. Is their desire more important than some kind of setting fidelity?
When someone asks the player to make some kind of concession to “fit the setting”…allowing Goliath stats but reskinning to large tribal humans as was mentioned earlier in the thread….isn’t itjust as valid to instead ask the GM to make concessions? “Hey, loosen up on the racial restrictions” or maybe “how about this collection of freaks is the campaign concept”. GMs are supposed to be creative…some constraint or input from other sources would seem to be the kind of prompt to encourage the imagination.
Keep in mind that by the time players get involved in any aspect of anything I've already spent maybe a year in setting prep. There's no point asking potential players anything before I start because for all I know they won't be interested (or won't be in town!) a year later when I'm finished.
Or you could just cut out that year long build up.
That may be a lot to ask. I know a lot of GMs truly enjoy that solo creative endeavor. I don’t know if many place the importance of that above the group’s enjoyment, or if some who do that even realize they do.
You kind of described the is element as work that you just want to get done, so I don’t know if this applies to you at all. But if you see this aspect of GMing as simply work to be done, then I don’t understand why you’re so resistant to any approach that would help mitigate that work.
The exploration mystery. What's over that hill? What's across that ocean, or do you fall off the edge of the world out there? Where does this road lead?
There's no exploration involved in finding the Caves of Evil if someone already knows where they are because that player put them on the map.
Sure there can be. Just because a player has an idea and the GM or group find it interesting and decide to use it doesn't mean they know every detail about it. Or when and how it may come up in the game.
I’ll say that I prefer characters who seem to actually exist in the world. Who know things and have heard things and have a base of knowledge. Much as people in the real world have. And people in the real world are surprised all the time. They discover things all the time.
You used the phrase “get tired real fast” earlier; doesn’t the idea of a fresh group of adventurers who only know about their immediate area and who go out into the world wide-eyed and amazed at everything….doesn’t that get old too?
going to go out on a limb and guess that geographical exploration and discovery aren't big things in your game.
You got it. I definitely want there to be discovery in my games, and there is, but it’s not usually of the “oh look, a mountain” sort.